Belt-tightener



(No Model.)

A 2 Sheetss-Sheet'. 1. R. C. WALL.

BBLTTIGHTBNER. Patented July 15, 1884.

f la

(No Mode1.) 2 Sheets-Sheet 2.

R.y C. WALL'.

BELT TIGHTBNER. No. 301,940. l Patented July 15. 1884.

E Z B UNrrnn STATES,

PATENT 'Q1-trice.

ROBERT C. WALL, OF ALLEGHENY, PENNSYLVANIA.

BELT-TIGHTEN ER.

SPECIFICATION forming part of Letters Patent No. 301,940, dated Jaly 15, '1884.

To all whom, it may concern,.-

Be it known that I.l ROBERT C. WALL, a citizen of the United States, ,residing at Allegheny, county. of Allegheny, State of Pennsylvania, have invented or discovered anew and useful Improvement in Belt-Tighteners; and I do hereby declare the following to be a full, clear, concise, and exact description thereof, reference being had to the accompanying drawings, making a part of this specification, in which-like letters indicating likeparts- Figure l is a perspective view of my belttightener applied to the end s of a belt. Fig.. 2' is asimilar view showing an attachment to be used when the ends of the belt are widely separated. Fig. Sis an enlarged perspective viewr of the belt-tightener- Fig. 4 is aperspective view of one of t-he clampsopened to be applied to the belt. Figs. 5 and 6 are detail views.

My invention relates to a mechanism for drawing and holding together the ends of belts for the purpose of sewing or suitably fastening such ends together 5 and my invention consists, in general ,in the construction and combination of parts, all as more fully hereinafter described and claimed.

In the drawings, A A indicate the ends of a belt. On these ends are slipped' the clamps B B', which consist ofthe two plates a a, having their inner faces serrated, as shown at b, Fig. 4. These plates are slotted at each end, as shown at c c', the slot c being open at its oter end, as shown. In these slots are placed the threaded bolts d, the head d of which is flattened, andis pivoted tothe cam-lever e, bifurcated at its cam-shaped end tol receive the head d. The threaded end of the bolt d is screwed into the nut c, which is provided'on its inner face with a rib, e2, which ts into the' slot ofthe lower plate, and is thereby prevented from turning. On lthe bolt d, between the plate a and the cam-lever e, is placed a washer, e, which forms a bearing-surface for the cam of projection of the lever. To apply this clamp to a belt the camlevers are turned up so as to slaclren the pressure of the bolts on .theplates a. The bolt d in the slot c is then slid out ofthe slot, and the plates a at that end are separated, as shown in Fig. 4, and slipped onto the belt. Then the cam-lever of the belt, which has not been removed from its slot c, is turned down, and the plates a take sufficient grip uponvthe Applicai ion tiled December 28, 1883.

(No model.)

bolt can be slipped into place in slot c and its cam-lever turned down to force together that end of the plates a. It' the cam levers, when turneddown, do not cause the plates to take a sufflcientlyiirm grip upon the belts, the bolt d should be screwed farther into the nut e in the under side of the plates, the lever e affording y a handle by which the bolt cl can be rotated.

or separated, as may be required, bya rod, g,

having oppositely-threaded ends, as shown. At the middle of this rod g, and integral therewith, is formed a ratchet, It, and on each side of the ratchet h are placed the arms l of the lever l,said arms being provided with a hole, through which the rod g passes.

In a slot, Zin the lever Z is pivoted the double pawl m, whereby the ratchet may be rotated.

In the edges ofthe lever l, at its upper end, are formed recesses Z3, into which fit the prongs a u of the handle a, on one side of which'is secured one end ofthe springt?. Ihe opposite end ofthe spring, being bent into hook shape, is adapted to t into ahole in the ends of the double pawl m and press down thereon, therebyholding one prong of the pawl away from and the other in engagement with the ratchet 7L. If it is desired to reverse the movement ofthe screw, the sprin g is disengaged from the arm of the pawl, and the handle n can then be detached from the lever, reversed, and slipped into place again, and the spring adjusted in the hole of the other arm of the pawl.

It may sometimes happen that the ends of the belt are separated such a distance that the clamps cannot be placed thereon while on the rod g. In such an emergency one of the clamps B is removed from the rod g and secured, as above described, to one end of the belt, and the other clamp carrying the rod g is secured to the other end of the belt.

On the end of the rod g from which the clamp was removed is, screwed a nut, o, provided with belt to hold the plates thereon until the other IOO drawn toward eaeh other a corresponding amount. Vhen the nut and elainp have been drawn together as inueh as possible, the hook in the clamp B is caught into one of the links of the ehain, as near as possible to the opposite elamp, B. The hook '0 is then released from its link, and the rod gis rotated s0 as to bring the elamp and nut out to the ends thereof, when the hook ois eaughtinto another link and the above operation repeated. These operations are re peated until the end ofthe rod g ean be screwed into the soeket ofthe elainp B,\vhen the deviee can be used in the usual.\vay.

If necessary, the handle n eau be used as a Wreneh to turn the bolts d, its forked end spanning the end of the cam-lever e.

I elaiin herein as my invention l. In a belt-tightening deviee, the plates a, having suitable slots, in combination with the threaded bolt d, the cani-lever e, pivoted thereto, and the nut e', having the ribs el, substantially as set forth.

2. In a belt-tightening device, the rod y,

having oppositely threaded ends, and the ratchet h, formed integral therewith, in eombination with the lever Z, the double pawl m, and the reversible handle n, having the spring n, substantially as set forth.

3. In a belt-tightener, the clamps B B', hav ing hooks s, in combination with the rod g, having oppositely-threaded ends, the nut o, having a hook, o', the ehain p, and mechanism for rotating the rod g, substantially as set forth.

4. The rod having oppositely-threaded ends, and the ratehet 7i, in combination with the lever l, the double pawl m, pivoted to said lever, and the detachable and reversible handle n, having the spring n2, substantially. as set forth.

5. The ratehet h, in combination with the lever I, having recesses at its end, as described, the double pawlm, pivoted in a slot in said lever, the detachable and reversible handlen,

having the prongs a, adapted to fit in the reeesses of the lever and forming a wrenchsoeket, as described, and the spring a2, substantially as described.

In testimony whereof I have hereunto set my hand.

ROBERT C. XVALL. `Witnesses:

R. H. XVJHTTLESEY, C. M. CLARKE. 

